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  <title>取得文件类型</title>

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</div><hr /><div id="function.filetype" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">filetype</h1>
  <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">filetype</span> &mdash; <span class="dc-title">取得文件类型</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.filetype-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">string</span> <span class="methodname"><strong>filetype</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
   )</div>

  <p class="para rdfs-comment">
   返回文件的类型。
  </p>
 </div>
  

 <div class="refsect1 parameters" id="refsect1-function.filetype-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">filename</code></em></dt>

     <dd>

      <p class="para">
       文件的路径。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.filetype-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   返回文件的类型。 可能的值有
   fifo，char，dir，block，link，file 和 unknown。
  </p>
  <p class="para">
    如果出错则返回 <strong><code>FALSE</code></strong>。如果 stat 调用失败或者文件类型未知的话
   <span class="function"><strong>filetype()</strong></span> 还会产生一个 <strong><code>E_NOTICE</code></strong> 消息。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.filetype-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-2316">
    <p><strong>Example #1 <span class="function"><strong>filetype()</strong></span> 例子</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">filetype</span><span style="color: #007700">(</span><span style="color: #DD0000">'/etc/passwd'</span><span style="color: #007700">);&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;file<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">filetype</span><span style="color: #007700">(</span><span style="color: #DD0000">'/etc/'</span><span style="color: #007700">);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;dir<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-function.filetype-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
失败时抛出<strong><code>E_WARNING</code></strong>警告。
</p>
 </div>


 <div class="refsect1 notes" id="refsect1-function.filetype-notes">
  <h3 class="title">注释</h3>
  <blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">此函数的结果会被缓存。参见
<span class="function"><a href="function.clearstatcache.html" class="function">clearstatcache()</a></span> 以获得更多细节。</span></p></blockquote>
  <div class="tip"><strong class="tip">Tip</strong><p class="simpara">自 PHP 5.0.0 起, 此函数也用于<em class="emphasis">某些</em>
URL 包装器。请参见 <a href="wrappers.html" class="xref">支持的协议和封装协议</a>以获得支持 <span class="function"><a href="function.stat.html" class="function">stat()</a></span> 系列函数功能的包装器列表。</p></div>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.filetype-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.is-dir.html" class="function" rel="rdfs-seeAlso">is_dir()</a> - 判断给定文件名是否是一个目录</span></li>
    <li class="member"><span class="function"><a href="function.is-file.html" class="function" rel="rdfs-seeAlso">is_file()</a> - 判断给定文件名是否为一个正常的文件</span></li>
    <li class="member"><span class="function"><a href="function.is-link.html" class="function" rel="rdfs-seeAlso">is_link()</a> - 判断给定文件名是否为一个符号连接</span></li>
    <li class="member"><span class="function"><a href="function.file-exists.html" class="function" rel="rdfs-seeAlso">file_exists()</a> - 检查文件或目录是否存在</span></li>
    <li class="member"><span class="function"><a href="function.mime-content-type.html" class="function" rel="rdfs-seeAlso">mime_content_type()</a> - Detect MIME Content-type for a file (deprecated)</span></li>
    <li class="member"><span class="function"><a href="function.pathinfo.html" class="function" rel="rdfs-seeAlso">pathinfo()</a> - 返回文件路径的信息</span></li>
    <li class="member"><span class="function"><a href="function.stat.html" class="function" rel="rdfs-seeAlso">stat()</a> - 给出文件的信息</span></li>
   </ul>
  </p>
 </div>

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